SPL Parts SPL RE V37 Adjustable Rear Sway Bar End Links Infiniti Q50 Q60 Q70

Vehicle Fitment

• 2014-2024 Infiniti Q50 (V37, All Engines, RWD/AWD) - Rear
• 2017-2022 Infiniti Q60 (CV37, All Engines, RWD/AWD) - Rear
• 2014-2019 Infiniti Q70 / Q70L (Y51, 3.7L VQ37VHR V6 / 5.6L VK56VD V8, RWD/AWD) - Rear
• 2011-2013 Infiniti M37 (Y51, 3.7L VQ37VHR V6, RWD/AWD) - Rear
• 2011-2013 Infiniti M56 (Y51, 5.6L VK56VD V8, RWD/AWD) - Rear

Fitment Notes

• Fits the rear sway bar position only on all applicable V37/Y51 platform vehicles.
• Compatible with both RWD and AWD (Intelligent All-Wheel Drive) variants across all listed models.
• The Q50 was discontinued after the 2024 model year. The Q60 was discontinued after the 2022 model year. The Q70/Q70L was discontinued after the 2019 model year. The M37 and M56 were discontinued after the 2013 model year (rebranded as Q70 for 2014+).
• All listed vehicles share the same rear sway bar link geometry and OEM part numbers (54668-1MA0C / 54618-1MA0C), confirming mechanical fitment equivalency across the full application list.
• Sold as a pair (one left, one right) covering the rear axle on one vehicle.

Features

• Massive Teflon-lined FK 1/2" spherical bearings deliver the highest load capacity available at this endlink size, providing long service life under the lateral forces generated by OEM and stiffer aftermarket rear sway bars on the V37/Y51 platform.
• Custom heat-treated chromoly high misalignment studs with electroless nickel plating provide up to 65 degrees of articulation, keeping the endlink completely bind-free across full rear suspension travel and when used with multiple adjustment holes on aftermarket sway bars.
• Length-adjustable design eliminates rear sway bar preload caused by spring settling, corner weighting, or ride height changes - allowing the bar to be set at a true horizontal angle for maximum roll resistance effectiveness and symmetric left-to-right cornering behavior.
• Black anodized 6061 aluminum turnbuckles with opposing left-hand and right-hand threaded rod ends enable fast, precise on-car length adjustment - turn the turnbuckle and snug the jam nuts without removing the endlink from the vehicle.
• Reduces the asymmetric rear roll resistance that develops from OEM fixed-length endlink preload, producing more predictable and consistent rear end behavior in both street and track applications.
• Compatible with all drivetrain and engine configurations across the full V37/Y51 application range, including all Q50 engine variants (2.0L Turbo I4, 3.5L Hybrid, 3.7L V6, 3.0L Twin-Turbo V6) and Q60 variants (2.0L Turbo I4, 3.0L Twin-Turbo V6).
• Designed and manufactured entirely in the USA by SPL Parts' in-house engineering and machining team.

Specifications

• Bearing: Teflon-lined FK 1/2" spherical bearing (per endlink)
• Stud Material: Heat-treated chromoly steel, electroless nickel plated, high misalignment design
• Turnbuckle Material: 6061 aluminum, black anodized
• Maximum Articulation Angle: 65 degrees
• Adjustment: Length-adjustable via opposing LH/RH threaded rod ends, on-car adjustable
• Position: Rear sway bar only
• Drivetrain: RWD and AWD (all applicable variants)
• Replaces OEM Part Numbers: 54668-1MA0C (left), 54618-1MA0C (right)
• Country of Manufacture: USA
• Part Number: SPL RE V37

Included Components

• 2x Adjustable rear sway bar endlinks (one left, one right)
• 2x Teflon-lined FK 1/2" spherical bearings (pre-installed)
• 2x Heat-treated chromoly high misalignment studs, electroless nickel plated (pre-installed)
• 2x Black anodized 6061 aluminum turnbuckles
• 4x Jam nuts (two per endlink for length-locking)

Product Description

The SPL Parts SPL RE V37 is a PRO-series adjustable rear sway bar endlink covering a broad range of Infiniti FM-platform vehicles - including the Q50 (2014-2024), Q60 (2017-2022), Q70/Q70L (2014-2019), M37 (2011-2013), and M56 (2011-2013) - in all engine and drivetrain configurations. All listed vehicles share the same rear sway bar link geometry and OEM part numbers (54668-1MA0C / 54618-1MA0C), confirming a direct mechanical equivalency across the entire application list. The OEM rear endlinks on these platforms are fixed-length units that develop sway bar preload as springs settle, driver weight loads the suspension, ride height changes, and corner weighting is applied. This preload shifts the bar away from its ideal horizontal angle and generates asymmetric roll resistance - the car corners differently depending on direction - an effect amplified with stiffer aftermarket rear bars. The SPL RE V37 resolves this entirely: set the black anodized 6061 aluminum turnbuckle to the exact length needed for a horizontal bar at your ride height, snug the jam nuts, and the position is locked in.

The Teflon-lined FK 1/2" spherical bearings provide the highest load capacity at this endlink size, significantly outperforming smaller-bore alternatives that cut static radial load limit substantially in the interest of lower cost. Heat-treated chromoly high misalignment studs, finished with electroless nickel plating for corrosion resistance, deliver up to 65 degrees of articulation - keeping the endlink bind-free throughout full rear suspension travel and when positioned at different adjustment holes on multi-position aftermarket rear bars. The black anodized turnbuckle uses opposing left-hand and right-hand threads, so length is adjusted by rotating the body, making on-car adjustments fast and requiring no special tools beyond standard jam nut wrenches.

The SPL RE V37 is equally effective on a stock-suspension daily driver - where the upgrade eliminates factory preload for more balanced handling - and on a fully modified track or autocross build with coilovers and an aftermarket rear sway bar. It fits every V37/Y51 model year in both RWD and AWD form and is a direct drop-in replacement for OEM part numbers 54668-1MA0C and 54618-1MA0C. Designed and manufactured entirely in the USA by SPL Parts. Sold as a pair.